explore the pressures on a public school system in a city that's unexpectedly benefiting from economic good times. ray suarez has our story from north dakota. >> reporter: there is no better economic view in the u.s. than the one seen from above williston, north dakota. a rapidly expanding oil boom has taken root below, bringing with it widespread prosperity and an unemployment rate that sits at just 1%. this city's fortunes are in stark contrast to most of the nation. real estate is profitable. blue collar jobs are abundant. and much of the globe, including asia, the middle east and europe, is investing in the local economy. but as opportunities and new residents pour in, it is clear that williston, home to 12 thousand people just a few years ago, is dramatically changing. >> we probably have already doubled in size in the last three years. >> reporter: tom rolfstad was born and raised here and he is now in charge of the city's economic development. >> it's very conceivable that within three years well be 50,000 people and within five or seven years we could be 100,000 people. it's ju
